EP0462026A1 - Selbstschalter mit Auslass für Schaltgase - Google Patents

Selbstschalter mit Auslass für Schaltgase Download PDF

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Publication number
EP0462026A1
EP0462026A1 EP91420174A EP91420174A EP0462026A1 EP 0462026 A1 EP0462026 A1 EP 0462026A1 EP 91420174 A EP91420174 A EP 91420174A EP 91420174 A EP91420174 A EP 91420174A EP 0462026 A1 EP0462026 A1 EP 0462026A1
Authority
EP
European Patent Office
Prior art keywords
chamber
housing
circuit breaker
outlet
orifice
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP91420174A
Other languages
English (en)
French (fr)
Inventor
Michel Perrot
Didier Lebouc
Jean-Bruno Comino
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Schneider Electric SE
Original Assignee
Merlin Gerin SA
Schneider Electric SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Merlin Gerin SA, Schneider Electric SE filed Critical Merlin Gerin SA
Publication of EP0462026A1 publication Critical patent/EP0462026A1/de
Withdrawn legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
    • H01H9/30—Means for extinguishing or preventing arc between current-carrying parts
    • H01H9/34—Stationary parts for restricting or subdividing the arc, e.g. barrier plate
    • H01H9/342—Venting arrangements for arc chutes

Definitions

  • the invention relates to a miniature electric circuit breaker with molded insulating housing of parallelepiped shape having a handle projecting from a front face, a fixing base arranged on an opposite rear face, and a pair of narrow lateral connection faces, said housing containing a main arc extinguishing chamber with deionization plates, and a decompression chamber communicating the output of the main chamber with the external medium through an evacuation orifice.
  • the exhaust of the breaking gases towards the external environment is generally effected by means of an orifice arranged in the narrow lateral face of the housing, that is to say in the environment in which is the connecting conductor.
  • the lateral orientation of the exhaust of ionized gases may cause priming with the connecting conductor.
  • the presence of flame arresters in the discharge orifice helps cool the ionized gases before they escape to the outside environment.
  • the cooling gradient nevertheless depends on the structure of the flame arresters.
  • the use of simple metal deionization grids does not allow optimum cooling of the ionized gases to be obtained, and the risk of external ignition remains for high currents.
  • the use of special deionization boxes makes it possible to improve cooling, but their incorporation into the discharge orifice is incompatible with the size of the miniature circuit breaker.
  • the object of the invention is to improve the exhaust of the breaking gas from a miniature circuit breaker.
  • the circuit breaker according to the invention is characterized in that the evacuation orifice is provided in the rear face of the insulating housing, to divert the ionized gas flow from the side of the mounting base, to an area devoid of connecting conductors or live conductive parts, and that the decompression chamber comprises a baffle located in the vicinity of the orifice evacuation.
  • the exhaust at right angles to the gases from the rear face of the box sends the hot gases to the rear part of the box, and prevents ignition in this region, regardless of the intensity of the current to be interrupted.
  • a miniature circuit breaker 10 with an insulating housing 12 molded in a parallelepiped shape has a front face 14 from which protrudes a lever 16 of the mechanism, an opposite rear face 18 equipped with a mounting base 20, and a pair 22.24 narrow side faces for connection.
  • the main arc extinguishing chamber 26 is formed by a stack of deionization sheets extending parallel to the base 20.
  • the outlet 28 of the arc extinguishing chamber 26 is positioned against a perforated wall 30 allowing passage cut-off gas during the arc extinction phase.
  • connection conductor 32 is introduced on the side of the face 22 into a cage of a connection terminal 34, which is housed in a cell 36 of the housing 12.
  • the base 20 for fixing the circuit breaker 10 can be adapted on a mounting rail (not shown).
  • a partition 38 of subdivision of the housing 12 is arranged between the cell 36 and the perforated wall 30 to confine a decompression chamber 40 at the outlet 28 of the extinguishing chamber 26.
  • the decompression chamber 40 is closed on the side of the side face 22, so as to prevent any escape of ionized gases from the side of the connecting conductor 32.
  • a discharge orifice 42 is provided in the rear face 18 of the housing 12, allowing communication between the decompression chamber 40 and the outside environment.
  • the breaking gases are directed towards the decompression chamber 40, and are evacuated through the orifice 42 towards the outside environment, after passing through a baffle 44 (see arrow direction F).
  • the presence of the discharge orifice 42 in the rear face 18 of the insulating housing 12 makes it possible to deflect the ionized gas flow on the side of the base 20, towards a posterior zone, devoid of active parts under tension.

Landscapes

  • Breakers (AREA)
EP91420174A 1990-06-15 1991-05-30 Selbstschalter mit Auslass für Schaltgase Withdrawn EP0462026A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9007616A FR2663458B1 (fr) 1990-06-15 1990-06-15 Disjoncteur electrique miniature a echappement de gaz de coupure.
FR9007616 1990-06-15

Publications (1)

Publication Number Publication Date
EP0462026A1 true EP0462026A1 (de) 1991-12-18

Family

ID=9397752

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91420174A Withdrawn EP0462026A1 (de) 1990-06-15 1991-05-30 Selbstschalter mit Auslass für Schaltgase

Country Status (2)

Country Link
EP (1) EP0462026A1 (de)
FR (1) FR2663458B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699730A1 (fr) * 1992-12-17 1994-06-24 Merlin Gerin Disjoncteur miniature à échappement latéral des gaz de coupure.
EP1271584A3 (de) * 2001-06-29 2004-11-10 AEG Niederspannungstechnik GmbH & Co. KG Ausblassystem für eine Plug-In-Komponente
WO2011066887A1 (de) * 2009-12-01 2011-06-09 Abb Ag Installationsschaltgerät mit einer lichtbogenlöscheinrichtung
CN102368461A (zh) * 2011-09-13 2012-03-07 上海诺雅克电气有限公司 一种小型断路器

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152232A (en) * 1960-02-29 1964-10-06 Ite Circuit Breaker Ltd Circuit breaker having bimetal rigidly secured to cradle
FR1569421A (de) * 1967-06-23 1969-05-30
FR2117785A1 (de) * 1970-12-17 1972-07-28 Maier & Cie Charles
DE2258607A1 (de) * 1971-12-02 1973-06-07 Legrand Sa Ueberstromschalter
FR2575861A1 (fr) * 1985-01-07 1986-07-11 Merlin Gerin Disjoncteur electrique miniature a chambre de formation d'arc
GB2178596A (en) * 1985-07-09 1987-02-11 Mitsubishi Electric Corp Arc-extinguishing device
DE3705216A1 (de) * 1987-02-19 1988-09-01 Geyer Gmbh & Co Christian Elektrischer leitungsschutzschalter

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3152232A (en) * 1960-02-29 1964-10-06 Ite Circuit Breaker Ltd Circuit breaker having bimetal rigidly secured to cradle
FR1569421A (de) * 1967-06-23 1969-05-30
FR2117785A1 (de) * 1970-12-17 1972-07-28 Maier & Cie Charles
DE2258607A1 (de) * 1971-12-02 1973-06-07 Legrand Sa Ueberstromschalter
FR2575861A1 (fr) * 1985-01-07 1986-07-11 Merlin Gerin Disjoncteur electrique miniature a chambre de formation d'arc
GB2178596A (en) * 1985-07-09 1987-02-11 Mitsubishi Electric Corp Arc-extinguishing device
DE3705216A1 (de) * 1987-02-19 1988-09-01 Geyer Gmbh & Co Christian Elektrischer leitungsschutzschalter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2699730A1 (fr) * 1992-12-17 1994-06-24 Merlin Gerin Disjoncteur miniature à échappement latéral des gaz de coupure.
EP1271584A3 (de) * 2001-06-29 2004-11-10 AEG Niederspannungstechnik GmbH & Co. KG Ausblassystem für eine Plug-In-Komponente
WO2011066887A1 (de) * 2009-12-01 2011-06-09 Abb Ag Installationsschaltgerät mit einer lichtbogenlöscheinrichtung
CN102368461A (zh) * 2011-09-13 2012-03-07 上海诺雅克电气有限公司 一种小型断路器

Also Published As

Publication number Publication date
FR2663458B1 (fr) 1996-06-07
FR2663458A1 (fr) 1991-12-20

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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